I chain piece, and to start and stop, I use small squares that are scrap, sewing them as my start stop pieces, and when done, I have a good start on a scrap quilt. When doing a particular job, every time I have to use a scrap start, I use the scrap pieces beside machine, and when I cut them off, they go into a scrap bucket beneath machine. eventually, it fills up, I press them and replace them on the scrap pile to sew the next time I need a starter. By the time they are used up, I have a dent made in my scrap quilt.